Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 4 (April 2004)

Cover illustration: Part of the crystal structure of 2-amino-3-hydroxy-4-phenylthiazolium chloride, showing the formation of a chain of edge-fused R42(11) rings along the b axis. For clarity, H atoms bonded to C atoms have been omitted. See Glidewell, Low, Skakle & Wardell [Acta Cryst. (2004), C60, o273-o275].

Synopsis: The two novel title compounds, Rb2[CrCl5(H2O)] and Cs2[CrCl5(H2O)], are structurally distinct, with pseudo-cubic and pseudo-octahedral coordinations, respectively, of alkali ions around the chromate complexes.

Hydrates of tin tetrachloride

Synopsis: The crystal structures of the tri- and tetrahydrate of tin tetrachloride are reported and discussed. The trihydrate contains chains of the tin species linked by a single hydrogen-bonded water molecule, whilst the tetrahydrate has a three-dimensional network. In addition, there are O-HCl interactions present.

2-[Benzoyl(hydroxyimino)methylamino]benzoic acid

Molecular conformation and supramolecular aggregation in two fused pyrazoles: -stacked R(6) dimers in 2,8,8-trimethyl-6,7,8,9-tetrahydropyrazolo[2,3-a]quinazolin-6-one, and sheets of alternating R(12) and R(48) rings in 3-tert-butyl-4',4'-dimethyl-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridine-5-spiro-1'-cyclohexane-2',6'-dione